Transmission mechanism.



W. B. PEARSON & E. R. SBWARD. TRANSMISSION MECHANISM. APPLIOATION FILEDFEB. 11, 1913.

1,084,81 8. Patented Jan. 20, 1914.

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. I W M44 (I ATTORNEY.

EOLUMI'IIA PLANOGRAPH CO-IWASIIINOTON. n. c.

W. B. PBARSON & E. R. SEWARD. TRANSMISSION MEOHANISM.

APPLIPATION FILED FEB. 11, 1913 1,084,818. Patented Jan. 20, 1914.

2 SHEETS-SHEET 2.

WITNESSES.-

ENTORS. Ava/E m w ZZVZZ AT RNL'Y.

coLuMulA PLANOORAIH :0. WASHINGTON. o.-

UNITED STATES PATENT OFFICE.

WALTER B. PEARSON, OF CHICAGO, ILLINOIS, AND ERNEST R. SEWARD, 0FMADISON,

WISCONSIN; SAID SEWARD ASSIGNOR TO THE HARTFORD MACHINE SCREW COM- PANY,OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

TRANSMISSION MECHANISM.

Specification of Letters Patent.

Patented J an. 20, 1914.

To all whom it may concern:

Be it known that we, WVALTER B. PEARSON, of Chicago, in the county ofCook and State of Illinois, and ERNEs'r R. SnwAuD, recently ofI-lartford, in the county of Hartford and State of Connecticut, but nowresiding at Madison, in the county of Dane and State of Wisconsin, bothcitizens of the United States, have invented a new and ImprovedTransmission Mechanism, of which the following is a specification.

Our invention relates more especially to that class of machines forautomatically forming metallic articles of various descrip tion, and anobject of our invention, among others, is to produce a machine of thisclass that shall be extremely rapid and effective in its operation, andaccurate as to the character of work produced.

One form of machine embodying our invention, and in the construction anduse of which the objects hereinabove set out, as well-as others, may beattained, is illustrated in the accom mnying drawings in which Figure 1is a view in end elevation of a portion of a machine embodying ourinvention, with parts broken away to show the construction. Fig. 2 is atop view of the same with parts broken away to show con struction. Fig.3 is a view partially in horizontal section through the machine on twoplanes. one passing through the axis of the cam shaft driver and theother passing through the axis of the slow speed shaft.

Fig. L is a detail view showing the connection between the change speedclutch lever and the clutch holding lever. Fig. 5 is a detail viewillustrating the connection be tween the cam shaft driver and the camshaft.

Tn the accompanying drawings the numeral 6 denotes the frame of themachine, constructed of any suitable material and properly formed toreceive and support the various parts of the mechanism making up themachine as a whole. A driving shaft 7 extends lengthwise of the machinefrom end to end (one end only of the machine and of this driving shaftbeing shown herein), be ing mounted in suitable bearings and driven inany suitable manner, as by means of a pulley or like device secured tothe shaft at the end not shown.

A helical gear 8 is mounted on the shaft 7 to rotate independentlythereof, this gear meshing with a helical gear 9 keyed to a shaft 10constituting a cam shaft driver that has a worm 11 meshing with a wormwheel 58 upon a cam shaft 12 that, in machines of this type, is employedfor driving various parts of the mechanism. In the operation of themachine it is desirable that this cam shaft shall travel at differentspeeds, as a slow speed when the tools are operating upon, or cutting apiece of work, and at a much faster speed when the tools are idle, aswhen different parts are being moved to proper position for furtheroperations, and in order to make the rapidity of the operation mosteffective it is essential that the change from one speed to anothershall be effected without delay and in the quickest possible manner, themechanism herein shown and described being particularly cilicient insecuring these results. In this mechanism, including the parts abovedescribed, the shaft 10 is permitted a limited lengthwise movementagainst the tension of a spring 13 that holds the shaft and the worm 11in its normal position of operation. A hand wheel 14, used for manualmove ment of the machine when desired, has a hub with a flange 15against which rollers mounted in the arms of a forked stop motion lever16 normally rest, this lever being mounted between cars 17 extendingfrom the side of the frame of the machine.

The helical gear 8 has a sleeve 18 mounted in the bearing 19 of theframe, witha clutch member 20 secured to the sleeve. This clutch memberis preferably of the toothed kind, the teeth of which are formed to meshwith the teeth of a sliding clutch member 21 splined on the shaft 7.This sliding clutch member is engaged in a suitable manner by the forkedend of a change speed clutch lever 22, pivotally mounted on a post 23,rising from a bracket 24 secured to the end of the machine. This leverhas a cam stud 25 projecting from its under side and a retaining stud 26projecting from its upper side, and a spring 27 secured at one end tothe lever and at its opposite end to the frame of the machine, normallyforces the clutch members 20, 21 int-o engagement. The lever 22 may havea handle 28 for purpose of manual operation, if desired.

A, slow speed worm 29, secured to the shaft 7, meshes with a slow speedworm wheel 30 rotatably mounted on the slow speed shaft 31 mounted inthe bracket 24. In the form of construction herein shown, this wormwheel is mounted on a bushing 32 supported on the shaft and havingsecured thereto a ratchet 33 engaged by a pawl 34, pivotally mounted onthe worm Wheel and by means of which the sleeve is driven. The end ofthis sleeve is provided with teeth forming one member 35 of a stopmotion clutch, the other mem ber 36 of which is formed on the end of astop motion sleeve 37 slidably mounted on the shaft 31 and having aflange 38 arranged for engagement with the forks 39 of a stop motionblock 40 secured to a stop motion rod 41, longitudinally movable in abearing 42 on the bracket 24. This rod supports a collar 13 and isflattened at its end for reception between the cars 44 of a hand lever45, pivotally attached to the bar. The end of the stop motion lever 16rests against the collar 13, which engagement causes the bar to be movedby the operation of the stop motion lever to disconnect parts and stopoperation of the tools.

A cam support 416 having cam receiving flanges 17, 4-8 is secured to thecam shaft 12, and a cam 19 secured to the flange 47 striking a cam block50 on the under side of a clutch holding lever 51, raises the lever anddisengages a stop shoulder 52 from the retaining stud 26, and releasesthe change speed clutch lever 22 and permits engagement of the clutchmembers 20, 21 under the pull of the spring 27. The clutch holding lever51 is pivotally mounted upon the bracket 24: and has a handle 53 bymeans of which it may be manually operated when desired.

A cam 51 secured to the receiving flange 48, operates upon the cam stud25 on the lever 22 to move said lever on its pivot and disengage theclutch parts 20, 21 against the force of the spring 27. The lever 22 ismoved sufiiciently by the cam to permit engagement of the shoulder 52with the retaining stud 26, whereby the clutch parts are held disengageduntil the lever 51 is dis engaged fro-m the stud 26 by the cam 19.

A pinion 55 secured to the slow speed shaft 31, meshes with a directionpinion 56 mounted on a stud proj ecting from the frame .of the machine,the pinion 56 meshing with a gear 57 secured to the cam shaft driver 10,this direction pinion being for the purpose of imparting movement to thegear 57 in the proper direction.

A bar 59 is secured to the upper edge of the fork 39 and has a slot 60engaging a pin 61 projecting from the lever 22. This construction willcause the clutch members 2021 to be disengaged by the movement of thelever 16 and the fork 39 should such clutch parts be in engagement, butshould they be disengaged, as shown in Fig. 2, then the movement of thefork 39 todisengage the clutch members 35-36 will not affect the clutchmembers 20-21.

The operation of the device is as follows: The parts being in theposition shown in the drawings, the cam shaft 12 is rotated at slowspeed, and tool cutting operation is being performed. The drivingconnection from the driving shaft 7 is through the slow speed worm andworm wheel 29 and 30, pawl and ratchet 34-, 33, clutch members 35, 36,slow speed shaft 31, pinions and gear 55, 56 and 57, driver 10, worm 11to the worm wheel 58 on the cam shaft 12. The helical gears 8, 9 andclutch members 20, 21 are, during this operation, rotating idly. Should,during this operation, any of the cutting tools meet with undueresistance, or excess force be exerted upon any of the parts connectedwith the cam shaft or operated thereby, this force will necessarily betransmitted to the worm 11, that, in its effort to overcome such forceis moved against the tension of the spring 13, moving the shaft ordriver 10 and operating the lever 16 to disconnect the stop clutchmembers 35, 36 through the medium of the stop mot-ion rod 11 and fork39. This same operation may be effected by means of the handle 45 whendesired. Means may be pro .vided for adjusting the tension of the spring13, which tension will be such as to resist power upon the worm 11 to anextent to permit practical operation of the tools, the tension of thespring, however, being such that it will yield to undue force upon theparts. When a tool cutting operation has ceased, the cam 19 immediatelyacts upon the clutch holding lever 51, disengaging it from the changespeed clutch lever 22 and permitting the clutch members 20, 2]. toengage under the force of the spring 27. The cam shaft now will bedriven from the driving shaft 7 through the clutch member 21, secured tothe shaft, clutch member 20, helical gears 8, 9, driver 10, and thencethrough the worm 11 as before. In this operation there is a direct drivefrom the shaft 7 to the cam shaft 12 but the slow speed worm wheel 30travels at the same rate as before, while the slow speed shaft istraveling at a faster rate which, however, is permitted by the ratchetand pawl (3334-) connection between said shaft and worm wheel. lVith theparts in this position, as hereinabove described, should excess forceoccur upon the shaft 10, and the lever 16 thereby be operated, the lever22 through the medium of the fork 39 and bar 59, will also be operatedto disengage the clutch parts 20-21 and thus stop the operation of themachine.

The handles 28 and 53 may be made use of for manual operation of thechange speed clutch member 22 and clutch holding lever.

mechanism may be changed to a greater or lesser degree and yet be withinthe spirit and intent of the invention.

We claim:

1. A variable speed driving mechanism, including a driving shaft and adriven shaft, a connection between said shafts for driving the latter ata certain speed, said connection including a connecting anddisconnecting clutch, a connection between said shafts for rotating thedriven shaft at a different rate of speed, said connection including aconnecting and disconnecting clutch independent of that above mentioned,a clutch operating member, a connection between said clutch operatingmember and both of said clutches, and means to operate one of saidclutches independently of the other by means of said clutch operatingmember.

2. In a driving mechanism, a driving shaft, a driven shaft, a gearconnection between said shafts, includlng a gear movable relatively toits intermeshing gear, means for yieldingly resisting the movement ofsaid gear, a clutch included in said connection, and clutch operatingmechanism connected to be operated by said gear when it is movedrelatively to its intermeshing gear.

3. In a driving mechanism, a driving shaft, a driven shaft, a gearconnection between said shafts, including a gear movable in an axialdirection, means for yieldingly resisting the movement of said gear inan axial direction, a clutch included in said connection, and clutchoperating mechanism connected to be operated by the movement of saidgear in an axial direction.

a. In a driving mechanism, a driving shaft, a driven shaft, a gearconnection between said shafts and including a shaft movablelongitudinally and supporting one of said gears, means for yieldinglyresisting the longitudinal movement of said shaft, a clutch included insaid connection, and a lever connected with said clutch to operate it,and also connected with and to be operated by said shaft in itslongitudinal movement.

5. In a driving mechanism, a driving shaft, a driven shaft, a connectionbetween said shafts including a worm meshing with a worm wheel, saidWorm being arranged to move in an axial direction, means for yieldinglyresisting said axial movement, a clutch included 111 sald connection,and clutch operating mechanism connected to be operated by said worm inits movement in an axial direction.

6. i shaft, a worm wheel secured thereto, a shaft movablelongitudinally, a worm secured thereto and meshing with said worm wheel,driving mechanism for said longitudinally movable shaft, said" mechanismincluding clutch members, and a lever con nected at one end with one ofsaid clutch members, and at its opposite end with the longitudinallymovable shaft to be operated thereby.

7. A variable speed driving mechanism, including a driving shaft and adriven shaft, :1 connection between said shaft for rotating the drivenshaft at a certain speed, said connection including a clutch, aconnection between said shafts for rotating the driven shaft at adifferent rate of speed, said connection including a clutch and one ofsaid connections including intermeshing gears, one of which may moverelatively to the other, means for yieldingly resisting said movement,means for operating one of said clutches, and means connected to beactuated by the relative movement of said gear to operate the otherclutch.

8. A variable speed driving mechanism including a drivin shaft and adriven shaft, a connection between said shafts for rotating the drivenshaft at a certain speed, said con nection including a clutch, aconnection between said shafts for rotating the driven shaft at adifferent rate of speed, said con nection .including a clutch, one ofsaid. connections including intermeshing gears, one of which may bemoved relatively with respect to the other, means for yichlinglyresisting the relative movement of said gear, and means for operatingeach of said clutches, each of said clutch operating members beingconnected to be ope 'ated by the relative movement of said gear.

9. A variable speed driving mechanism, including a d riving shaft and adriven shaft, a driving connection between said shafts for rotating thedriven shaft at a certain speed, said connection including a clutch, aeonncction between said shafts for rotating the driven shaft at adifferent rate of speed, said connection including a clutch, and one ofsaid connections including intermeshing gears, one of which is arrangedto move relatively with respect to the other, means for yieldinglyresisting said relative movement, and clutch operating means connectedwith one of the clutches to be operated by the relative movement of saidgear. and clutch operating mechanism connected with the other clutch tobe operated by the relative movement of said gear, and means to permitindependent operation of the first mentioned clutch.

10. A variable speed driving mechanism, including a driving shaft and adriven shaft, a driving connection between said shafts for rotating thedriven shaft at a certain rate of speed, said connection including aclutch, means for normally engaging the clutch members, a connectionbetween said shafts for rotating the driven shaft at a different rate ofspeed, said connection including a clutch, means for forcing the clutchparts into normal engagement, said connections including intermeshinggears, one of which is movable relatively to the other, clutch operatingmembers connected with each of said clutches, and means to disengagesaid clutch operating members by the relative movement of said gear.

11. A driving shaft, a driven shaft, a connection between said shaftsincluding a clutch, means for forcing one of the clutch members in onedirection, a lever connected with said clutch member to move it in anopposite direction, a cam to operate said lever, means to engage andhold said lever in one position, and a cam to disengage said holdingmeans from said lever.

12.v A driving shaft, a driven shaft, a connection between said shaftsincluding a clutch, means for forcing one of the clutch members in onedirection, a lever connected with. said clutch member to move it in anopposite direction, a cam to operate said lever, a latch mounted on apivot horizontally disposed and arranged to engage said lever to hold itin one position, and a cam to disengage said latch from said lever.

13. A driving shaft, a driven shaft, a connection between said shaftsincluding a clutch, means for forcing the clutch parts normally intoengagement, a lever connected with one of the clutch members todisengage them, a latch arranged to engage said lever and hold it withthe clutch members disengaged, and a cam supporting member bearing a camto operate said latch and another cam; to operate said lever.

let. A driving shaft, a driven shaft, a connection between said shaftsfor rotating the latter at a certain rate of speed, a clutch included insaid connection and employed to effect driving operation, means forintermittently disengaging said clutch members, a connection betweensaid shafts for rotating the driving shaft at a rate of speed differentfrom that above mentioned, a stop motion clutch included in saidconnection and arranged for operation by a stop motion mechanism, andwith its members engaged in the normal operation of the machine, andstop motion mechanism connected to operate said stop motion clutch.

15, A driving shaft, a driven shaft, a connection between said shaftsincluding intermeshing gears, one of which is arranged to moverelatively to the other, a stop motion clutch included in saidconnection, and astop motion mechanism arranged to be operated by therelative movement of said gear to actuate the clutch members.

16. A driving mechanism mounted in a frame and including a clutch toconnect and disconnect parts of said mechanism, one of said clutchmembers being a flanged sleeve, a sliding bar mounted in the frame, astop motion lever mounted on the frame and operatively connected withsaid bar, a block secured to said bar and having forks engaging theflange of said sleeve, and means for operating the stop motion lever.

17. A driving mechanism mounted in a frame and including a clutch toconnect and disconnect parts, a sliding bar operatively connected toactuate said clutch, a member loosely mounted on the bar, a leverloosely engaged with the bar to operate it, a handle movably connectedwith the bar to engage said loosely mounted member, means to opposemovement of said loosely mounted member, and means to actuate saidlever.

18. A driving mechanism mounted in a frame and including a clutch toconnect and disconnect parts, a sliding bar operatively connected toactuate said clutch, a member loosely mounted on the bar, a leverivotally connected with the bar and having a cam to engage said looselymounted member, a lever.

mounted on the frame in engagement with said loosely mounted member,means for actuating the lever, and means for resisting movement of thelever against the pressure of said cam.

19. A driving shaft, a driven shaft, a connection between said shafts,including a clutch, a lever for operating said clutch, a secondconnection between said shafts and including a stop motion clutch, amember movably mounted and connected to operate said stop motion clutch,a bar secured to said movable member and engaged with said lever by apin and slot connection to operate said lever when it is in oneposition, and a stop motion mechanism connected to operate 1: aidmovable member.

20. A driving shaft, a driven shaft, a connection betweensaid shafts,including clutch members with means for normally forcing the saidmembers into engagement, a lever for forcing the clutch members apart, asecond connection between said shafts and including a stop motion clutchhaving its members continuously engaged in the normal operation of themachine, one of said connections including intermeshing gears, one ofwhich is relatively movable with resp t to its meshing g ar, a membermovably mounted and connected to be operated by the relative movement ofsaid gear, a bar connected with said movable member, and a pin and. slotconnection between said bar and said lever, and arranged to permitmovement of the bar Without actuating the lever when its clutch partsare disengaged, but to operate said lever when its clutch parts areengaged.

21. In a driving mechanism, a driving shaft, a driven shaft, a gearconnection be tween said shafts including a gear movable in an axialdirection by its intermeshing gear, means for yieldingly resisting theaxial movement of said gear, and means connected with said axiallymovable gear to be 0per- 15 ated thereby to stop movement of theoperating parts.

WALTER B. PEARSON. ERNEST R. SEVVARD.

\rVitness-es as to the signature of WV alter B. learson WV. E. COOPER,

EDWIN H. EHRMAN. Witnesses as to the signature of Ernest R. Seward:

NELL M. Dunns'r, PATRICIA OSBORNE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patentl, Washington, D. G.

